April 2019, Volume 21, No. 7 New Diagnostic Charge · hensive battery diagnostic services in less than 20 minutes. The new DCBS will be replacing the EL-50313 Midtronics GR8 Battery

April 2019, Volume 21, No. 7

Customer Care and Aftersales

New Diagnostic Charge Battery Station Available Soon . . . . . . . . . .2

Generator Conditions Due to Water Leak . . . . . . . . . . . . . . . . . . .3

Multiple Electrical Concerns Due to Wiring Harness Contact . . .5

7th Annual Honoring Our Heroes Silent Auction Offering Special Edition Toolboxes . . . . . . . . . . . . . .8

10-Speed Automatic Transmission Control Valve Body Bolt Kit . . . . . .9

End of Windows 7 Support

Hybrid and EV Emergency First Responder Information

see page 4 see page 6

New Diagnostic Charge Battery Station Available Soon

April 2019 – Page 2

CONTINUED ON PAGE 3

The next generation Diagnostic Charge Battery Station (DCBS),

available beginning in July 2019 from GM Dealer Equipment,

promises to make battery testing faster and easier. Integrating

the latest technology, the DCBS will be able to perform compre-

hensive battery diagnostic services in less than 20 minutes. The

new DCBS will be replacing the EL-50313 Midtronics GR8 Battery

Tester/Charger currently offered through GM Dealer Equipment.

NEW DIAGNOSTIC CHARGE BATTERY STATIONThe GR8 and the new DCBS are the only units that are capable

of producing battery warranty codes when required and GM will

continue to accept codes for warranty claims from both units.

The warranty code is required for all warranty claims for battery

replacement to help in analyzing battery failures and improve

product quality.

The new DCBS uses the latest technology to increase the perfor-

mance, versatility and accuracy needed for battery testing and

diagnosis.

COMPREHENSIVE DIAGNOSTICSThe DCBS features:

• Comprehensive battery diagnostic services using a smart logic

test sequence to produce in-depth test results for lead acid, Ab-

sorbent Glass Mat (AGM) and Enhanced Flooded Battery (EFB)

batteries. Plus, it tops off the battery when deemed a good bat-

tery.

• Integrated GM vehicle database with the battery specifications

for GM vehicles to speed up the diagnostic process

• Rapid vehicle identification that offers the capability to read and

translate 1D barcodes and 2D QR codes

• Integrated ½ CCA load tester can manage load on 1500 CCA

battery

• Integrated reserve capacity (RC) tester for true RC measurement

• Clean, conditioned and controlled power supply for control

module calibration updates

• Remote handheld diagnostic tester (rechargeable) can be used

in the service lane while the unit is charging/maintaining a bat-

tery

• Software updates that help ensure the latest data is being used

(includes four free software updates per year)

• Formatted for use in 28 different languages

• Built-in 80 Amp power source (Capable of 100 Amp with

proper power source)

• Thermal IR Printer for printing service records/battery test results

• PDI (Pre-Delivery Inspection) Mode to check/charge the battery

on new vehicles received at the dealership

• Cold battery detection and battery warming function

• Wi-Fi and Bluetooth capable

New

Diagnostic Charge Battery StationAvailable Soon

v


Service departments are encouraged to review

their battery testing and charging equipment

and determine how the new DCBS can help

meet their needs today and in the future.

The current GR8 Battery Tester/Charger can still

be used for warranty code generation. Servicing

of the GR8 will continue through Midtronics for

2019.

SPECIAL OFFERAs production of the new DCBS begins, GM

Dealer Equipment is offering a promotional price

that is $200 off the regular unit price for all ad-

vanced orders placed April 10 through July 31,

2019. Advanced orders will not be billed until

units are shipped. DCBS orders will be shipped

in the order in which they were received starting

in July 2019.

Additionally, dealers may utilize their iMR- Ser-

vice Lane Technology Fund for up to 100% reim-

bursement for all advanced orders placed during

the promotional period.

For information or assistance in placing orders

for the new DCBS, call 844-742-8471 or visit

GMDEsolutions.com

Thanks to Rob Kennedy

Remote handheld diagnostic tester

Some 2018-2019 Express

and Savana vans equipped

with the 4.3L V6 engine

(RPO) LV1 may have a hard

start condition, broken fan

belt, loss of power steering

or loss of power brake as-

sist. These conditions may

be the result of water leak-

ing from the cowl area into

the generator vents. Under

certain weather condi-

tions, the water may freeze

inside the generator and

prevent it from turning.

If these conditions are

found, replace the

generator, fan belt, and

any other pulleys that have

been contaminated with

rubber build-up from the

belt heating up.

The common location for

the water leak is at the

lower cowl of the engine

compartment.

Remove the air inlet grille

panels and the windshield

wiper module to access the

inner lower right-side cowl

seam.

Apply Kent Automotive

High-Tech Clear Seam

Sealer to the seam. Be sure

to apply the sealer to the

entire inner lower right-

side seam.

Refer to Bulletin #19-NA-

037 for additional information.

Thanks to Matt Singer

Generator Conditions Due to Water Leak

Leak location at the lower cowl.

Inner lower right-side cowl seam

Apply sealer to the entire seam.


End of Windows 7 SupportTechline computers in GM dealerships running a

Windows 7 Professional operating system (OS) must

be replaced by December 31, 2019 in order to re-

ceive assistance from the Techline Customer Support

Center (TCSC) in 2020. Microsoft has announced

that it will end support for Windows 7 on January

14, 2020.

CHECK YOUR PROCESSOR BEFORE UPGRADINGCurrently, Windows 10 Professional, 64 bit, is the

recommended OS for all Techline computers. Do not

update the operating system from Windows 7 to

Windows 10 Pro unless the computer processor is

an Intel 6th Generation or better processor.

To check the processor system on your computer,

select Start at the bottom of the screen. Next, right

click Computer, and then left click Properties.

The generation of the processor is the first num-

ber after i7, i5, or i3. In the example shown, the

number 5 listed after i3 indicates that the Intel Core

i3-5005U processor is the 5th generation.

NEW COMPUTER CONSIDERATIONSWhen replacing a Techline computer, refer to

the “Best” column for recommended computer

specifications in the latest GM Dealer Infrastructure

Guidelines (DIG). In addition, with the rollout of

Techline Connect, computers running an Intel 7th

generation or better operating system will offer the

best performance.

To view the latest DIG as well as computers for

purchase, go to gmdesolutions.com and select the

Dealer Services tab. Once you’ve input your BAC

and zip code, select Techline IT Solutions from the

Dealer Services menu.

Thanks to Lisa Scott

Select Start > right click Computer > left click Properties

Check the first number after i7, i5, or i3.


There may be several electrical conditions on some 2017-2018 Silverado and

Sierra and 2019 Silverado LD and Sierra Limited models. The conditions may

include several illuminated brake and traction control MILs, steering-related

Driver Information Center (DIC) messages, inoperative tail lamps or rear turn

signals, inoperative rear camera, and intermittent communication issues. These

conditions may be due to damage to a multi-wire bundled harness.

In addition, one or more of the following DTCs may be set: C0035, C0040,

C0045, C0050, C0710, C1115, C1116, C1117, C1118, P0449, P0453, P0499,

P129D, P2537, P2537, U007D, U0073, U0074, U0077, U0100, U0101, U0121,

U0126, U0137, U0140, U0151, U0415, U0428, U1556, and/or U18A2.

Not all conditions or DTCs may be present. Different conditions and driver

notifications may be caused by the control module and wiring harness at the

module. Due to the cause of the condition, and the position of the wires in

the harness, it is unlikely that more than one circuit will be affected by the

condition.

Check for

high re-

sistance,

opens,

shorts and

damaged

circuits in

the chas-

sis and

Electronic

Brake

Control

Module

wiring

harness.

Look for any corrosion or contact with the chassis.

Areas to inspect where there may be contact with the

wiring harness include at the body and rear crossmember.

Also check the frame/leaf spring support bracket and the

cargo box or bed mount.

Inspect the wiring harness point of contact and repair

any damaged wiring as needed. Tape all repaired contact

points of the harness using Woven Polyester Electrical Tape

(PET) in a double layer. If required, reposition the harness

away from the area of contact.

Thanks to Bob Hartman

Multiple Electrical Concerns Due to Wiring Harness Contact

1. Body 2. Crossmember Frame/leaf spring support bracket

Cargo box or bed mount


First responder information regarding various hybrid and electric vehicles (EV) produced by

GM is available online at GMSTC.com for emergency personnel. The information can help

first responders in learning about the hybrid and electric systems so that they can perform

necessary rescue actions quickly and properly in an emergency situation.

The First Responder Guides provide an overview of how vehicle systems operate and how

to identify a hybrid or electric vehicle from a conventional vehicle. In addition, the

Quick Reference Sheets and Rescue Sheets detail the location of key components as well as

how to safely prevent current flow by disabling the system. The sheets show high voltage label

locations and cable cut label locations.

Additional guides for first responders also are available covering other topics, such as

airbag information and high strength steel body structure identification.

HYBRID AND EVEmergency First Responder

Information

CONTINUED ON PAGE 7

First Responder Guide for the Malibu Hybrid.


The following First Responder Guides, Rescue Sheets and Quick

Reference Sheets are available for GM vehicles:

Buick

• 2018-19 Buick LaCrosse eAssist Reference Sheet

• 2012-16 LaCrosse and Regal First Responder Guide

• 2012-16 LaCrosse and Regal Quick Reference Guide

Cadillac

• CT6 Plug-In Hybrid Electric Vehicle (PHEV)

• Escalade Two-Mode Hybrid Vehicle First Responder Guide

• Escalade Two-Mode Hybrid Vehicle Quick Reference Sheet

• 2014 ELR First Responder Guide

• 2014 ELR Quick Reference Sheet

Chevrolet

• 2017 Chevrolet Bolt EV Rescue Sheet

• 2016-19 Volt Rescue Sheet

• 2011-15 Volt EREV First Responder Guide

• 2011-15 Volt EREV Quick Reference Sheet

• Equinox Fuel Cell First Responder Guide

• Equinox Fuel Cell Quick Reference Sheet

• 2015-2016 Impala Compressed Natural Gas Technology Quick

Reference Sheet

• 2016-20 Malibu HEV Rescue Sheet

• 2014 Malibu Start/Stop Quick Reference Sheet

• 2013-2015 Malibu Eco with eAssist First Responder Guide

• 2013-15 Malibu Eco with eAssist Quick Reference Guide

• 2007-09 Aura and Malibu Hybrid First Responder Guide

• 2007-09 Aura and Malibu Hybrid Quick Reference Sheet

• 2011 Express-Savana CNG First Responder Guide

• 2011 Express-Savana CNG Quick Reference Sheet

• 2016 Chevy Silverado eAssist First Responder Guide

• 2004-07 Silverado and Sierra PHT First Responder Guide

• Two-Mode Hybrid Vehicle First Responder Guide

• Two-Mode Hybrid Vehicle Quick Reference Sheet

• GM Alternative Fuels First Responder Guide

• 2014-16 Spark EV First Responder Guide

• 2014 Spark EV Quick Reference Sheet

GMC

• 2016 GMC Sierra eAssist First Responder Guide

• 2004-07 Silverado and Sierra PHT First Responder Guide

• Two-Mode Hybrid Vehicle First Responder Guide

• Two-Mode Hybrid Vehicle Quick Reference Sheet

• 2011 Express-Savana CNG Quick Reference Sheet

• GM Alternative Fuels First Responder Guide

Saturn

• 2008 VUE Hybrid First Responder Guide

• 2008 VUE Hybrid Quick Reference Sheet

• 2007 VUE Hybrid First Responder Guide

• 2007 VUE Hybrid Quick Reference Sheet

• 2007-09 Aura and Malibu Hybrid First Responder Guide

• 2007-09 Aura and Malibu Hybrid Quick Reference Sheet

To download, go to gmstc.com and select the First Responders

link on the left side of the page.

Thanks to Paul Radzwilowicz

First Responder link at www.gmstc.com


GM Customer Care & Aftersales, GMC and GMC dealers are hosting the 7th

Annual Honoring Our Heroes Gala to help raise funds to build custom-designed,

mortgage-free Smart Homes that meet the needs of our nation’s most catastrophi-

cally injured service members through the Stephen Siller Tunnel to Towers Foun-

dation. Benefits from the gala also will be used to help The Fallen and Wounded

Soldiers Fund of Michigan, an all-volunteer group of private citizens that provide

essential financial assistance to Michigan’s wounded Iraq and Afghanistan veterans.

To support the charity event, there is a silent auction that is open to all GM

dealerships. Bids can be placed on the online fundraising site for all auction items

beginning April 15, 2019.

All proceeds from the auction benefit the Stephen Siller Tunnel to Towers

Foundation and the Fallen and Wounded Soldiers Fund of Michigan. Visit the

website for details on all of the great auction items or to make a donation.

Exclusive items up for auction include:

• Two Large ‘Special Edition’ Toolboxes wrapped with an exclusive Corvette image

• Two 54-inch Roll Cab Toolboxes wrapped with American flag graphics

• Master Technician Tool Sets

• Walt Disney World ticket package

• Autographed sports memorabilia

• Diecast cars

• Autographed guitars

• Golf outings

• Much more

SPECIAL EDITION SNAP-ON TOOLBOXESThe Snap-on toolboxes available in the auction are one-of-a-kind boxes with a

number of special features.

The custom-designed Snap-on toolbox with unique Corvette graphics is 54”

wide x 72” high x 28” deep.

The Snap-on Roll Cab with American flag graphics is 54” wide X 48” high X

28” deep.

The Master Technician-level tool kit features a complete set of hand tools. The

toolbox in the display shown is not included.

Please join in supporting our American heroes by participating in the auction —

bids will be accepted through April 27 — or making a donation.

Thank you for your support!

Roll cab with American flag graphics

Master Technician tool kit

Annual Honoring Our Heroes Silent Auction Offering Special Edition Toolboxes

Check out the auction items or make a donation on the Honoring Our Heroes website.

7th

GM TechLink is published for all GM retail technicians and service consultants to provide timely information to help increase know ledge about GM products and improve the performance of the service department.

Publisher: John Meade GM Customer Care and Aftersales

Editor: Lisa G. Scott GM Customer Care and Aftersales

Technical Editor: Mark Spencer [email protected]

Production Manager: Marie Meredith

Creative Design: 5by5 Design LLC [email protected]

Write to: TechLink PO Box 500, Troy, MI 48007-0500

GM TechLink on the Web: GM GlobalConnect

General Motors service tips are intended for use by professional technicians, not a “do-it-yourselfer.” T hey are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the information applies to your vehicle or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information. Inclusion in this publication is not necessarily an endorsement of the individual or the company.Copyright© 2019 General Motors. All rights reserved.


When replacing the control valve

body on the 10-speed automatic

transmission (RPO MQB) on 2019

CT6, Silverado 1500 and Sierra

1500 models, some of the bolts are

one-time use bolts and should be

discarded while other bolts can be

reused.

The control valve body bolt kit, part

number 24294356, includes bolts

that do not need to be replaced.

The kit includes seven bolts, but only

three bolts require replacement when

removed. The instruction sheet indi-

cates that all seven of the identified

bolts should be replaced. The bolts

are marked by arrows in the valve

body casting.

The new bolts in the kit contain a

preapplied sealant as shown. The

bolts removed from the valve body

also are shown.

In addition, the filter retaining bolts

should be replaced.

When removing the control valve

body, the automatic transmission fluid pump seal should stay with the valve body assembly.

Refer to #PIP5631 for additional information.

Thanks to Terry Neuendorf

10-Speed Automatic Transmission Control Valve Body Bolt Kit

Only 3 bolts require replacement (callout #1)

New bolts (left) and removed bolts (right)

ilter retaining bolts

Documents

April 2019, Volume 21, No. 7 New Diagnostic Charge · hensive battery diagnostic services in less than 20 minutes. The new DCBS will be replacing the EL-50313 Midtronics GR8 Battery